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Pump-Down Visualization Service with
a Downhole Tension Tool
Daniel Dorffer
Strategic Business Manager
APPS-13-005
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0
10000
20000
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wireline - 2 stagesper day
Tractor - includeswireline costs
Coil Tbg - includesgun/plug costs
Why Pump Down Perforating?
Horizontal Drilling became practical and economical about 2000.
Initial completions were time consuming and expensive
– Each stage required tractor conveyed E-Line guns or Coil Tubing
TCP type guns.
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0
10000
20000
30000
40000
50000
60000
70000
80000
90000
wireline - 2 stagesper day
Tractor - includeswireline costs
Coil Tbg - includesgun/plug costs
Why Pump Down Perforating?
– One – two stages per day considered acceptable
– Stimulation equipment idle between perforation stages
Work in the Barnett Shale proved Pump Down economic viability
– Eliminated added conveyance methods
– Multiple stages per day became practical
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Horizontal Multi-Stage Perforating
Pump Down Services (PDS) offer quick, efficient and cost effective
deployment of multi-gun/plug runs for multiple stage completions
PDS has been deployed in the USA and Canada for horizontal
completions and also for other e-line services – method is
expanding globally
Efficient PDS, depending on depths, now allow up to 5 stages per
24 hour day
A typical single E-Line stage consists of
– Multiple guns (3 foot - 6 spf carriers)
– Explosive setting tool
– Composite plug
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Pump Down Plug and Perforate in Horizontal wells
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Pump Down Plug and Perforate in Horizontal wells
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Pump Down Plug and Perforate in Horizontal wells
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Pump Down Plug and Perforate in Horizontal wells
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Pump Down Plug and Perforate in Horizontal wells
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Pump Down Plug and Perforate in Horizontal wells
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Pump Down Plug and Perforate in Horizontal wells
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Pump Down Operations Today
Wireline and Stimulation operate separately but not independently.
No difference in operating method if Stimulation and Wireline are
same company.
2 way radio communication between wireline operator and pump
operator is only communication
– No pre-run planning
– Always reactive, never proactive
– Neither party has all the information to identify a potential
problem and adapt the operation ahead of a failure.
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Horizontal Multi-Stage Perforating
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Cerberus – Surface Tension Profile
Calculations based on user determined pump rate and line speed
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Cerberus – Downhole Tension Profile
Calculations based on user determined pump rate and line speed
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Typical wireline view
Cable
speed Pump rate
bbl/min Pump
Pressure
Cable tension (surface tension)
Wireline Tension
increases rapidly
Wireline Speed
increased to
compensate
Pumps finally
shut down 100 ft
(30 m) later
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Tool String Lost
Tools
pumped off
Wireline
Tension
increase
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TCC – Pumping Pressure
– Pump Rate
Wireline Unit – Depth
– Cable Speed
Mono-Conductor Tension Device
– Downhole Tension
RTO Monitor
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Pump Down Software Input Table
Pump Down Visualization Inputs Outputs
Wireline Unit
Surface and Downhole Tension Numeric Display Gauge Trend Graph
Line Speed Numeric Display
Depth Numeric Display Well Illustration
Collar Locator (CCL) Gauge Trend Graph
Tech Command Center
Pump Rate Numeric Display Gauge Trend Graph
Wellhead Pressure Numeric Display
Customer
Survey data (loaded into Cerberus) Well Illustration
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Pump Down Visualization Value
Improved efficiency resulting from Stimulation and Wireline sharing data
– Real time
– Easy to understand graphics
– Flag or alert if cable or cable head weak point nears or exceeds
calculated failure value
– With Downhole Tension Tool (DTT) can compare run to run for
changes that may occur downhole
– Post job diagnostics that captures all Stimulation and Cased Hole
information in a single database
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Pump Down Visualization – Wireline Unit
22 FOR INTERNAL USE ONLY
Pump Down Visualization – Wireline Unit
Tool Position
Indicator
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Pump Down Visualization – Pumping Unit
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Pump Down Visualization – Pumping Unit
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Downhole Tension Tool
Plugged grease
injection return
line stopped
cable.
DTT indicates
weight loss at
tool well before
cable stopped at
surface.
Note tool bounce
when cable
stopped
Surface
Tension
Down Hole
Tension
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Downhole Tension Tool
Pump down operations
Surface tension insensitive to
well trajectory changes
Downhole tension follows
well trajectory changes
3 degree
increase
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Downhole Tension Tool
Faster reaction
Improved accuracy
– Sensor measures at the critical point
– Not affected by line stretch
– Not affected by weight of cable
– Not influenced by cable friction or drag
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Summary
Pump Down Visualization combined with Downhole Tension Tool
provides tool movement during a pump down run
Allows real time viewing of data in user friendly interactive formats
Offers run to run comparison of tension data to optimize run time
efficiency
Real time tension profile and caution indicators visible to both
wireline operator and pump operator.
– Can reduce or prevent stuck tools, accidental pump off of tools.
Recorded data can be reviewed for post-job diagnostics
